Humidifier



FIG. 1 is a perspective view of a humidifier;

FIG. 2 is a front elevation view of the humidifier of FIG. 1;

FIG. 3 is a left side view of the humidifier of FIG. 1;

FIG. 4 is a right side view of the humidifier of FIG. 1;

FIG. 5 is a top plan view of the humidifier of FIG. 1; and,

FIG. 6 is a bottom plan view of the humidifier of FIG. 1.

The broken lines in the drawings are for the purpose of illustrating portions of the humidifier that form no part of the claimed design. Surfaces forming part of the claimed design are defined by shaded surfaces; broken lines immediately adjacent shaded surfaces represent boundaries of the claim and form no part thereof; dash-dot lines represent boundaries of the claim and form no part thereof. 

CLAIM The ornamental design for a humidifier, as shown and described. 